Jun could no longer control the emotions he had been hiding ever since his mother, Hikaru, started running marathons. The sight of Hikaru stretching and doing muscle training right in front of him was too erotic and sensual, disrupting Jun's mind. It's unforgivable to lust after one's own mother... but emotions can't be stopped. A single bead of sweat glistening on her smooth skin, hair sticking to her flesh, and the faint scent of a woman. When Jun was enveloped in the pheromones contained in Hikaru's sweat, his reason began to crumble with an audible sound...
